I would also personally help someone out for free, but perhaps if you turn a good profit, and this person is helpful, you get them a nice gift card upon completion of the sale as a friendly gesture.

We collectively paid for the lot split engineering and legal expenses while I talked title company into doing their part as a complimentary gesture.

The deed was transferred to me from a business partner as a good gesture.....

good will gesture, ask your neighbors if they want it, make sure to say if you don't take it by x day I will have it hauled.  

The whole premise of wholesaling is to leverage other folks resources, so selling your vehicle although a grand and noble gesture means you've somewhat missed the mark.

I think the "pay them off" route is a bad idea unless it is for someone deserving of charitable gesture.  

That might be more of a gesture of good faith, or you might be advised to refund the fee because the price changed after accepting fees (different pretense for them paying you) -- again, I'm not a lawyer.

 Unless this agent has been putting in several offers and has been hustling for you- let them know you certainly appreciate the gesture and at this time formal representation is not needed however if the situation arises where you need an agent they'll be the one you contact.

This is a nice gesture, but if he simply gave me $50, I would think it was weird.   

For longer leases, wait and see how they are before you offer a new lease, make sure to get an application from each adult and I pay the background check fee for existing tenants (anyone on the lease) as a gesture of good will- not their fault the building was sold.